Ni-based catalysts with a Ni mass fraction of 17％are prepared on USY,ZSM-5,SBA-15,Al2O3 and SiO2 carriers,respectively through the equal volume impregnation method.Their catalytic performance is evaluated through the hydrogenation of 1,4-butynediol(BYD)to 1,4-butanediol(BDO).The catalysts are characterized by means of XRD,N2 adsorption-desorption,H2-TPR and NH3-TPD.The results indicates that the conversion of BYD can exceed 99％over the catalysts with different carriers,but the selectivity of BDO varies greatly according to different carries.The selectivity of BDO reaches 83.1％,that of 1,4-butenediol is 16.6％,and that of 2-hydroxytetrahydrofuran is very low when Ni/SBA-15 catalyst is served,the reaction has performed for 5 h while other conditions remain the same.This can be attributed to Ni/SBA-15's large specific surface area,high average pore size,and weak acidity as well as good dispersion of nickel.Ni/SBA-15 is screened for one-step hydrogenation of BYD to prepare BDO under low temperature and low pressure conditions.
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